- unitid
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{"value"=>"3036144", "type"=>"local_mss"}
{"value"=>"241", "type"=>"local_mss_er"}
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{"value"=>"2013", "type"=>"inclusive", "normal"=>"2013"}
- unittitle
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{"value"=>"<span class=\"title\">New York Review of Books</span> 50th Anniversary"}
- physdesc
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{"format"=>"structured", "physdesc_components"=>[{"name"=>"extent", "value"=>"43 computer files", "unit"=>"computer_files"}, {"name"=>"extent", "value"=>"21.85 megabytes", "unit"=>"megabytes"}]}
- date_start
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2013
- keydate
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2013
- date_end
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2013
- date_inclusive_start
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2013
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2013
- extent_statement
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21.85 megabytes (43 computer files)